Pike County, OH neighbors Jackson near Waverly metropolitan centre granting a 2020 estimated census population standing at 28,719 making it the 45th least populous county situated within Ohio overall. Its county seat is Waverly with other towns include Piketon & Beaver-Waverly itself corresponds out to Pike's biggesttown aside from recognized country seat. This area had had been established from Ross and Scioto Counties back in 1815 when local residents petitioned for new administrative boundaries - posthumously named after Native American Tribe Shawnee suzerainty era following James Madison .